acid: Remove running services no longer present in $CYCHE_SERVICES

If a service was previously managed by cychedelic, but an update to the
cyche code removes it from the config file, stop the service and delete
the git clone.  As usual, this should leave any docker volumes intact.

Signed-off-by: Malfurious <m@lfurio.us>

2 files changed, 32 insertions, 0 deletions

diff --git a/acid/cyche-remove b/acid/cyche-remove
new file mode 100755
index 0000000..1aa5f36
--- /dev/null
+++ b/acid/cyche-remove
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# cyche-remove <name>
+#
+# Stop the service <name>, which was previously managed by cychedelic, and
+# remove associated files.
+
+cd "/services/$1"
+
+file=$(cat '.git/previous_file')
+slug=$(cat '.git/previous_slug')
+[ -n "$slug" ] && slug="--project-name $slug"
+
+docker compose $slug --file "$file" down \
+    --remove-orphans
+
+echo "Removing files..."
+cd ".."
+rm -rf "$1"
+echo "Done."
diff --git a/acid/cychedelic b/acid/cychedelic
index 17f2d33..a73554a 100755
--- a/acid/cychedelic
+++ b/acid/cychedelic
@@ -37,11 +37,23 @@ update() {
     done
 }
 
+remove() {
+    next=$(printf '%s\n' "${CYCHE_SERVICES[@]}" | awk '{print $1}')
+    prev=$(ls -A '/services')
+    removed=$(printf '%s\n' "$next" "$next" "$prev" | sort | uniq -u)
+
+    for name in $removed; do
+        cyche-remove "$name"
+        sleep "$CYCHE_JOB_TIME"
+    done
+}
+
 # startup: A restart of the ACID daemon usually indicates an elapse of the
 # $CYCHE_MAINT_TIME period, so rebuild services and perform cleanup now.  We
 # sleep briefly at the beginning to allow the previous cychedelic instance time
 # to die.
 sleep "$CYCHE_STARTUP_TIME"
+remove
 update --force
 docker system prune --force --all
 starttime=$(now)